KR100496843B1 - Roller guide assembly - Google Patents

Abstract

The roller guide assembly for an elevator system includes a plurality of rollers and a damping subassembly. The damping subassembly includes a friction damping subassembly and a noise isolation device. Friction damping subassemblies minimize vibration and lateral movement of the elevator vehicle. The friction damping subassembly includes a friction damper attached to the axis of each roller in the roller guide assembly. The friction damping subassembly consumes energy and improves the ride comfort of the elevator vehicle. The noise isolation device interconnects the plurality of dampers and blocks the noise between the roller and the elevator vehicle. In the above embodiment, the noise isolation device comprises a friction bar interconnecting the plurality of rollers and the plurality of dampers.

Description

Roller guide assembly {ROLLER GUIDE ASSEMBLY}

The present invention relates to an elevator system, and more particularly to a roller guide assembly of the system.

A typical elevator system includes counterweights each suspended at opposite ends of the winding rope located on the elevator vehicle and on the hoistway of the elevator. The elevator system also includes at least two sets of guide rails extending in the longitudinal direction of the elevator hoistings, each guide rail being located on an opposite surface of the hoistway. The guide rail guides a plurality of roller guides attached to the elevator vehicle. While guiding the elevator vehicle up and down the hoistway, the roller guide separates the elevator car from the unstable state and balances the elevator car in the hoistway, thereby ensuring smooth operation of the elevator car.

There are several factors that affect the ride comfort of an elevator car. One is the total length of the hoistway. Long hoists require a lot of guide rail parts in the hoists and a large number of joints between the guide rail parts. A large number of guide rail parts result in an increase in the overall weight of the guide rail, and the resulting load deforms the rail. The joints between the guide rails also make discontinuities. A slight discontinuity in the minutely deformed rails and joints causes the elevator vehicle to vibrate and cause lateral movement.

Another factor that negatively affects ride quality is aerodynamics. During the vertical movement of the elevator vehicle in the hoistway, the aerodynamic pulsation from the hoistway door and the pulsation from the counterweight cause lateral movement and vibration of the elevator car.

In order to minimize the negative impact of rail imperfection and aerodynamics on the ride comfort of an elevator vehicle, a typical roller guide assembly includes a suspension system and a damping system. The suspension system includes a spring associated with each roller of the roller guide assembly that restores the roller back to its original position after the roller is deformed by a defect in the guide rail. It is desirable to separate the elevator vehicle from the defects of the rail.

Conventional damping systems include hydraulic cylinders to reduce vibration. However, hydraulic damping systems increase stiffness in suspension systems. Increased stiffness of the suspension system is undesirable because the increased instability of the guide rail is transmitted to the vehicle, which in turn increases the vibration as a response. In addition, hydraulic damping systems require routine maintenance, wear and tear, and increase the cost of the entire system.

Although typical roller guide assemblies are sufficient to ensure the relative smooth running of a typical elevator, the continuing demand for skyscrapers or improved ride comfort requires improvements to existing roller guide assemblies. Since high speed elevator vehicles amplify aerodynamic elements, and longer guide rails increase load impact forces, existing systems are not suitable for high speed operation of elevator vehicles on longer guide rails. Thus, a roller guide with a soft suspension system and an improved damping system is desired.

1 is a simplified perspective view of an elevator vehicle with a plurality of roller guide assemblies.

2 is an enlarged perspective view of the roller guide of FIG. 1 with a friction damping subassembly according to the present invention installed;

3 is a partially enlarged perspective view of the friction damping subassembly of FIG.

4 is a partially exploded view showing the friction damper of the friction damping subassembly of FIG.

FIG. 5 is a partial exploded view illustrating an alternative embodiment of the friction damper of the friction damping subassembly of FIG. 3. FIG.

It is an object of the present invention to improve ride comfort in high rise elevator systems.

Another object of the present invention is to minimize vibrations and lateral movement in high rise elevator systems.

According to an embodiment of the present invention, an elevator system includes a plurality of roller guide assemblies for guiding an elevator vehicle along a plurality of guide rails located in a hoistway, and is attached to a roller guide assembly that minimizes vibration and lateral movement of the elevator vehicle. Friction damping subassembly. The friction damping subassembly includes a friction bar and a friction damper attached to the side of each roller in the roller guide assembly. The friction damping subassembly consumes energy and improves the ride comfort of the elevator vehicle.

An advantage of the present invention is that vibration of the elevator vehicle can be minimized without increasing the suspension stiffness of the roller guides.

Another advantage of the present invention is that it is less expensive and less wear than conventional damping systems. In addition, the damping subassembly of the present invention does not require continuous adjustment or routine management.

According to another embodiment of the present invention, the roller guide assembly for an elevator system includes an element that separates the roller guide from the vehicle frame. The separating element minimizes vibration transmitted from the roller guide to the vehicle frame and improves ride comfort.

According to one embodiment, the roller guide assembly comprises a friction bar, a friction damper located at the axis of each roller in the roller guide assembly, and a bushing supporting the axis. The friction bar interconnects the axes of the plurality of rollers and provides a fixed surface for friction production of the friction damper. The friction bar and bushing do not ground the shaft to the base of the roller guide assembly, as a result of which the shaft is separated from the bottom and the vehicle frame.

According to FIG. 1, the elevator system 10 includes an elevator vehicle 12 suspended on a winding rope 14 and driven along a guide rail. The plurality of roller guide assemblies 20 engage the guide rails 16.

According to FIG. 2, each roller guide assembly 20 includes a plurality of rollers 22 that engage the guide rails 16. Each roller 22 has a roller shaft 24 passing through the center of the roller and a first arm end 30 fixedly attached to the roller shaft 24 and a second arm end fixedly attached to the pivot shaft 34 ( And a translating lever arm 26 having 32. Pivot axis 34 rotates in bushing 36 secured to and attached to bottom 40 of roller guide assembly 20.

Each roller guide assembly 22 also includes a suspension subassembly 42 and a friction damping subassembly 44. The suspension subassembly 42 includes a recovery spring 46 compressed against the first arm end 30 of the lever arm 26. The friction damping subassembly 44 includes a friction bar 50 and a plurality of friction dampers 52. The friction bar 50 includes a plurality of openings 54, each representing a shape in which a plurality of openings 54 are connected on each pivot axis 34. Each friction damper 52 is located outside of the extended threaded end of the pivot axis 34 of each roller 22.

3 and 4, as an optimal embodiment, each friction damper 52 is substantially symmetrical with respect to the friction bar 50 and has a pair of first washers adjacent each side of the friction bar 50 ( On the outside of the first friction washer 60 with a low friction washer 64 lying between the first and second washers 60, 62 on each side of the friction bar 50. And a pair of second friction washers 62 positioned. The friction washer 64 includes a low friction coating layer on the side adjacent to the first washer 60. A spring arrangement 65 comprising a plurality of conical leaf springs is located outside of each second washer 62 as shown in FIG. 4. The third washer 70 is located outside of the plurality of conical shaped leaf springs 66 having a pair of nuts 72 finishing the friction damper subassembly on each side of the friction bar 50.

While the elevator vehicle 12 is operating up and down the hoistway, each roller guide assembly 20 is engaged with and guided by the corresponding guide rail 16 as shown in FIG. 1. The roller guide assembly 20 of the elevator vehicle is driven along the guide rail 16, and each roller 22 rotates about the roller shaft 24 as shown in FIG. 2. Each roller 22 is susceptible to vibration or lateral movement due to defects associated with the guide rail 16 or aerodynamic effects in the hoistway. The lateral movement of each roller 22 moves the corresponding lever arm 26 fixedly attached to the roller shaft 24. A pivot shaft 34 fixedly attached to the second arm end 32 of the lever arm 26 rotates in the bushing 36.

When the lever arm 26 is deformed, the recovery spring 46 forces the lever arm 26 and consequently the corresponding roller 22 to its original position. As the pivot axis 34 rotates, the friction washer 64 and the second washer 62 move about the axis 34 with relative movement with respect to the first washer 60 as shown in FIGS. 3 and 4. Rotate The friction between the first washer 60 and the friction washer 64 consumes energy and minimizes vibration. Since the spring device 65 pushes the friction washer 64 against the first washer 60 forcibly, the relative motion between the first washer 60 and the friction washer 64 becomes possible. The nut 72 is tightened and adapted to allow the spring device to be sufficiently compressed.

3 and 4, the first washer 60 prevents the friction bar 50 from being worn. The friction between the friction bar 50 and the first washer 60 prevents relative movement between them and preferentially consumes energy between the first washer 60 and the friction washer 64. The first washer 60 also ensures that the friction damper 52 is structurally integrated.

According to FIG. 5, an optional embodiment of the friction damper 152 of the present invention includes a friction washer 164 and a second washer 162 immediately adjacent to the friction bar 150. In the alternative embodiment described above, energy is exhausted between the friction bar 150 and the friction washer 164. In another embodiment, the friction washer 164 is coated with a low friction coating on the side adjacent to the second washer 162. Thus, energy is exhausted between the friction washer 164 and the second washer 162.

The friction bar 50 of the friction damping subassembly 44 acts as a ground point. In the preferred embodiment, the friction bar 50 ensures that absorbed energy is not transferred back to the roller guide assembly 20. In addition, the friction bar 50, which is connected to the bushing 36 integrated with a rubbery noise shielding material 37, provides a noise shielding effect between the plurality of rollers 22 and the vehicle 12. The friction bar 50 connects the three shafts 34 to each other without grounding the shaft 34 to the bottom 40. This arrangement minimizes the transmission of vibrations to the vehicle 12 which are induced when the roller 22 connects the guide rails 16. Although the use of the friction bar as shown in FIGS. 1-5 is an advantage in shape, the noise isolation device provided by the friction bar can be applied to other roller guide assemblies with or without friction damper 52. It should be understood that

However, in other embodiments where friction bars are not possible, friction may occur between the lever arm and other grounding points that consume energy. For example, the bottom can act as a ground point. The low friction coating of the friction washer is a registered trademark of Teflon. Polytetrafluoroethylene composites, or other similar materials.

The friction damping subassembly of the present invention reduces vibration without increasing the rigidity of the suspension system. The above fact allows the roller guide assembly to have a relatively soft suspension system that is forced to run smoothly. Friction damping subassemblies have a number of additional advantages over conventional hydraulic dampers. One advantage is cost savings. Another advantage is the alleviation of wear. Another advantage is that the friction damping subassembly of the present invention does not require routine maintenance. In addition, the friction damping subassembly does not require continuous adjustment.

While the invention has been shown and described with reference to certain preferred embodiments, it will be understood that the invention can be variously modified and modified without departing from the spirit or scope of the invention as set forth in the following claims. Those skilled in the art can easily know that. For example, although the best embodiment describes a spring arrangement 65 that includes a plurality of conical shaped leaf springs 66, other types of springs may also be used.

Claims (13)

A roller guide assembly 20 for an elevator system 10 having an elevator vehicle 12, comprising a plurality of rollers 22 engaged with a damping subassembly 44 comprising a plurality of dampers 52, 152; , The roller guide assembly includes noise isolation mechanisms 50, 150, which interconnect a plurality of dampers, isolate noise between the roller and the elevator vehicle, and the noise isolation mechanism comprises a plurality of dampers and a plurality of dampers. A roller guide assembly, which is a bar interconnecting the rollers. 2. The noise canceling device according to claim 1, wherein the noise blocking device includes a bushing (36) associated with a pivot shaft (34) engaged with each roller, said bushing being positioned fixed to an elevator vehicle, said bushing being provided with a noise blocking material. Roller guide assembly comprising. The roller guide assembly of claim 1, wherein the damper is a friction damper and the bar interacts with each friction damper to dissipate energy. The roller guide assembly of claim 1, further comprising a plurality of shafts 34 coupled to each roller, wherein each damper is coupled to one of the plurality of shafts, and the bar interconnects the plurality of shafts. . A roller guide assembly 20 for an elevator system 10 having an elevator vehicle 12, comprising a plurality of rollers 22 engaged with a damping subassembly 44 comprising a plurality of dampers 52, 152; , The roller guide assembly includes noise isolation mechanisms 50, 150, which interconnect a plurality of dampers, isolate noise between the rollers and the elevator vehicle, and the noise isolation mechanisms absorb the energy absorbed by the rollers. A roller guide assembly that functions as a ground point to prevent transfer back to the guide assembly. 6. The noise canceling device according to claim 5, comprising a bushing (36) coupled to the pivot shaft (34) engaged with each roller, said bushing being positioned fixed to the elevator vehicle, said bushing being provided with a noise canceling material. Roller guide assembly comprising. 6. The roller guide assembly of claim 5 wherein the noise isolation mechanism is a bar interconnecting the plurality of dampers and the plurality of rollers. 8. The roller guide assembly of claim 7, wherein the damper is a friction damper and the bar interacts with each friction damper that consumes energy. 8. A roller guide assembly according to claim 7, further comprising a plurality of shafts (34) coupled to each roller, wherein each damper is coupled with one of the plurality of shafts, and the bar interconnects the plurality of shafts. . 6. The roller guide assembly of claim 5, wherein the damper is a friction damper. The elevator system 10 includes an elevator vehicle 12 that is operated up and down in a hoistway, the elevator vehicle having a plurality of roller guide assemblies 20 driven along a plurality of guide rails 16 extending the length of the hoistway. Each roller guide assembly includes a plurality of rollers 22, each roller is installed on the shaft to pivot about the shaft 34, the roller guide to minimize the vibration and lateral movement of the elevator vehicle Said elevator system comprising a friction damping subassembly 44 associated with the assembly,   The friction damper subassembly includes a plurality of friction dampers 52 and 152 coupled to the axes of the rollers of the roller guide assembly, respectively, and friction bars 50 and 150 that interact with the plurality of friction dampers that consume energy. Each friction damper includes a friction washer 64 and 164 positioned adjacent to the friction bar, a spring device 65 for applying a force over the friction washer, a nut 72 for compressing the spring device, a friction washer and a spring device. Elevator system comprising a second washer (62, 162) positioned between. The elevator system 10 includes an elevator vehicle 12 that is operated up and down in a hoistway, the elevator vehicle having a plurality of roller guide assemblies 20 driven along a plurality of guide rails 16 extending the length of the hoistway. Each roller guide assembly includes a plurality of rollers 22, each roller is installed on the shaft to pivot about the shaft 34, the roller guide to minimize the vibration and lateral movement of the elevator vehicle Said elevator system comprising a friction damping subassembly 44 associated with the assembly,   The friction damping subassembly includes a plurality of friction dampers 52 and 152 coupled to the axes of the rollers of the roller guide assembly, respectively, and a friction bar 50 and 150 that interact with the plurality of friction dampers that consume energy. And each friction damper comprises a friction washer 64,164 located adjacent to the friction bar, a spring device 65 for applying a force over the friction washer, and a nut 72 for compressing the spring device, the friction washer The elevator system is coated with a low friction coating. The elevator system 10 includes an elevator vehicle 12 that is operated up and down in a hoistway, the elevator vehicle having a plurality of roller guide assemblies 20 driven along a plurality of guide rails 16 extending the length of the hoistway. Each roller guide assembly includes a plurality of rollers 22, each roller is installed on the shaft to pivot about the shaft 34, the roller guide to minimize the vibration and lateral movement of the elevator vehicle Said elevator system comprising a friction damping subassembly 44 associated with the assembly, The friction damping subassembly includes a friction damper 52, each coupled with an axis of the roller of the roller guide assembly, and a friction bar 50, each interacting with a plurality of friction dampers that consume energy, each friction damper having a friction A friction washer 64 positioned adjacent the bar, a spring device 65 for applying a force over the friction washer, and a nut 72 for compressing the spring device, wherein the friction damper is positioned between the friction bar and the friction washer. An elevator system further comprising a first washer (60).